Fe-14Ni-14Cr-2.5Al steel showing excellent corrosion-resistance in flowing LBE at 550 °C and high temperature strength

IF 2.8 2区工程技术 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Nuclear Materials Pub Date : 2023-08-28 DOI:10.1016/j.jnucmat.2023.154703

Lin Shen , Guoqing Cao , Dong Lang, Huabei Peng, Yuhua Wen

引用次数: 0

Abstract

We investigated the corrosion behavior, microstructural evolutions, and mechanical properties in an alumina forming austenitic (AFA) Fe-14Ni-14Cr-2.5Al steel after exposure in the flowing lead-bismuth eutectic (LBE) at 550 °C for 4008 h and aging in air for 5000 h. The results showed that the AFA steel exhibited not only excellent corrosion-resistance in the flowing LBE but also a strong stability of austenite and high yield strength (589 MPa) at 550 °C. The excellent corrosion-resistance was ascribed to the rapid formation of a thin Al₂O₃ scale. For the first time, the precipitation of γ'-Ni₃Al phase was observed in the AFA steel after long-term aging at 550 °C.

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Fe-14Ni-14Cr-2.5Al钢在550℃流动LBE中具有优异的耐腐蚀性和高温强度

研究了一种氧化铝形成奥氏体(AFA) Fe-14Ni-14Cr-2.5Al钢在550℃流动铅铋共晶(LBE)中暴露4008 h、在空气中时效5000 h后的腐蚀行为、显微组织演变和力学性能。结果表明，AFA钢不仅在流动铅铋共晶(LBE)中具有优异的耐腐蚀性，而且在550℃时具有很强的奥氏体稳定性和较高的屈服强度(589 MPa)。优异的耐腐蚀性能归因于快速形成薄Al2O3层。在550℃长期时效后，首次在AFA钢中观察到γ′-Ni3Al相的析出。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Nuclear Materials 工程技术-材料科学：综合

CiteScore

5.70

自引率

25.80%

发文量

601

审稿时长

63 days

期刊介绍： The Journal of Nuclear Materials publishes high quality papers in materials research for nuclear applications, primarily fission reactors, fusion reactors, and similar environments including radiation areas of charged particle accelerators. Both original research and critical review papers covering experimental, theoretical, and computational aspects of either fundamental or applied nature are welcome. The breadth of the field is such that a wide range of processes and properties in the field of materials science and engineering is of interest to the readership, spanning atom-scale processes, microstructures, thermodynamics, mechanical properties, physical properties, and corrosion, for example. Topics covered by JNM Fission reactor materials, including fuels, cladding, core structures, pressure vessels, coolant interactions with materials, moderator and control components, fission product behavior. Materials aspects of the entire fuel cycle. Materials aspects of the actinides and their compounds. Performance of nuclear waste materials; materials aspects of the immobilization of wastes. Fusion reactor materials, including first walls, blankets, insulators and magnets. Neutron and charged particle radiation effects in materials, including defects, transmutations, microstructures, phase changes and macroscopic properties. Interaction of plasmas, ion beams, electron beams and electromagnetic radiation with materials relevant to nuclear systems.